Articulated device between linkage assembly support arms of a collapsible roof

ABSTRACT

An articulated device includes a rivet assembly for connecting first and second linkage assembly support arms together at common ends thereof such that the arms are movable relative to one another. The rivet assembly includes a rivet having first and second rivet heads and a rivet shaft. The rivet shaft extends through first and second bearing holes in the common ends of the arms with the first rivet head being on the first arm and the second rivet head being on the second arm. The rivet assembly has a bearing sleeve extending between the rivet shaft and the bearing holes. The bearing sleeve has a collar-type stop and a shoulder-type stop adjacent the first rivet head with the collar-type stop lying against the first arm and the shoulder-type stop lying against the first rivet head. The bearing sleeve has a ring-shaped stop lying against the second rivet head.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims foreign priority benefits under 35 U.S.C.§119(a)-(d) to DE 10 2009 031 050.9, filed Jun. 30, 2009, which ishereby incorporated by reference in its entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an articulated device between linkageassembly support arms of a collapsible vehicle roof.

2. Background Art

DE 199 41 087 C2 (corresponds to U.S. Pat. No. 6,322,132) describes anarticulated connection (e.g., hinged joint) for a movable vehicle roof.The hinged joint includes two bearing sections held together by abearing pin (i.e., a pivot pin, a rivet, etc.). Each bearing section isrespectively part of an end section of a corresponding roof bow. Thehinged joint permits a relative rotation between the roof bows to enablethe roof to be moved between closed and opened positions. One or more ofthe components of the hinged joint has a friction-reducing surfacecoating.

DE 295 16 619 U1 describes a hinged joint between two linkage assemblysupport arms of a movable vehicle roof. The hinged joint includes abearing pin inserted through aligned holes in the end sections of thearms. The pin is in the hole of the first arm so that it cannot berotated while the second arm is rotatable with respect to the pin. Thepin has a surrounding bushing inserted into a hole of a metallic bearinghaving a collar. The collar acts as a spacer disk between the arms.

U.S. Pat. No. 3,328,072 describes a convertible top rail for a movablevehicle roof. The top rail includes a control arm, a top bow, and asupport arm which are assembled on a common bearing. The support arm hastwo adjacent support arm elements transversely separated at a distancefrom one another. The control arm is integrated between the support armelements with a bearing section. A rivet connects the control arm, thetop bow, and the support arm. A bushing made of a pliable material isinserted into the holes of the control arm on which two spacer collarsare provided. The spacer collars produce a defined spacing between thecontrol arm and the support arm elements.

SUMMARY OF THE INVENTION

An object of the present invention includes an articulated device (i.e.,an articulated connection, a hinged joint, etc.) between linkageassembly support arms of a collapsible vehicle roof in which thearticulated device provides a secure connection and has a smoothoperation, a relatively simple assembly, and a relatively high forceabsorption capability.

In carrying out the above object and other objects, the presentinvention provides an articulated device including a first arm having afirst end with a first bearing hole and a second arm having a first endwith a second bearing hole with the first ends of the arms beingadjacent to one another with the bearing holes being aligned. Thearticulated device further has a rivet assembly for connecting the armstogether at the first ends such that the arms are movable relative toone another about the first ends. The rivet assembly has a rivet. Therivet has first and second rivet heads and a rivet shaft extendingbetween the rivet heads. The rivet shaft extends through the first andsecond bearing holes with the first rivet head being on the first end ofthe first arm adjacent to the first bearing hole and the second rivethead being on the first end of the second arm adjacent to the secondbearing hole. The rivet assembly further has a bearing sleeve extendingbetween the rivet shaft and the first and second bearing holes. Thebearing sleeve have a collar-type stop and a shoulder-type shaft stopadjacent the first rivet head with the collar-type stop lying againstthe first arm and the shoulder-type shaft stop lying against the firstrivet head. The bearing sleeve further has a ring-shaped stop adjacentthe second rivet head with the ring-shaped stop lying against the secondrivet head.

Further, in carrying out the above object and other objects, the presentinvention provides an articulated device including a first arm having afirst end with a first bearing hole and a second arm having a first endwith a second bearing hole with the first ends of the arms beingadjacent to one another with the bearing holes being aligned. Thearticulated device further has a rivet assembly for connecting the armstogether at the first ends such that the arms are movable relative toone another about the first ends. The rivet assembly has a blind rivet.The blind rivet has a rivet sleeve and a mandrel shaft with a mandrelhead. The rivet sleeve and the mandrel shaft extend through the firstand second bearing holes with the mandrel head being on the first end ofthe first arm adjacent to the first bearing hole. The rivet sleeve has arivet sleeve head on the first end of the second arm adjacent to thesecond bearing hole. The rivet assembly further has a bearing sleeveextending between the rivet sleeve and the first and second bearingholes. The bearing sleeve has a collar-type stop and a shoulder-typeshaft stop with the collar-type stop lying against the first arm and theshoulder-type shaft stop lying against the mandrel head. The bearingsleeve further has a ring-shaped stop adjacent the rivet sleeve head.

In embodiments of the present invention, an articulated device (i.e., anarticulated connection, a hinged joint) including a rivet assemblyenables a pair of support arms of a collapsible roof linkage assembly tomove relative to one another about a common end in an exemplary manner,i.e., without rattling, due to the design of the rivet assembly. Thearticulated device has high force absorption capability and longlifetime as well as simple structural implementation. Use of a blindrivet for the rivet connection contributes to simple assembly andcontrolled formation of the expansion as the shaft is impacted. Firstand second bearing bushings in first and second bearing holes of theends of the arms assist the smooth operation of the articulated deviceand are inexpensive components.

The above features, and other features and advantages of the presentinvention are readily apparent from the following detailed descriptionsthereof when taken in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates an oblique rear view of a passenger vehicle having amovable roof in accordance with an embodiment of the present invention;

FIG. 2 illustrates a perspective view of a first articulated device forlinkage assembly support arms of the roof;

FIG. 3 illustrates an enlarged sectional view of the first articulateddevice along line III-III of FIG. 2;

FIG. 4 illustrates a perspective view of a second articulated device forlinkage assembly support arms of the roof;

FIG. 5 illustrates an enlarged sectional view of the second articulateddevice along the line V-V of FIG. 4 during an initial assembly stage;

FIG. 6 illustrates an enlarged sectional view of the second articulateddevice along the line V-V of FIG. 4 during a subsequent assembly stage;and

FIG. 7 illustrates each of the first and second articulated devices atdetail X of FIGS. 3 and 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)

Referring now to FIG. 1, an oblique rear view of a passenger vehicle 1having a movable roof 4 (i.e., a folding top, a convertible top, acollapsible top, etc.) in accordance with an embodiment of the presentinvention is shown. Vehicle 1 has a vehicle body 2 with a vehicle frame3. Vehicle frame 3 has a wall structure, e.g., sheet metal, and supportsfolding top 4 on vehicle body 2. The middle portion of vehicle body 2includes a passenger compartment and the rear portion of vehicle body 2includes a luggage compartment 7.

Roof 4 includes a cloth cover 12 stretched over a frame assembly. Theframe assembly is pivotably attached on opposite longitudinal sides of arear portion of vehicle body 2 to move roof 4 between a closed position(designated in FIG. 1 with the reference term “Schst”) and an openedposition relative to vehicle body 2. In the closed position (shown inFIG. 1), roof 4 spans over and covers passenger compartment 6. In theopened position, roof 4 is rearwardly lowered into luggage compartment 7and stored therein.

The frame assembly includes a plurality of convertible top bows 8, 9,10, and 11 which support cloth cover 12 thereon. Top bows 8, 9, 10, and11 extend between longitudinal sides of vehicle body 2 and runtransverse to longitudinal direction A-A of vehicle 1 at a distance fromone another along longitudinal direction A-A. As viewed in the directionfor forward travel of vehicle 1, top bow 8 lies furthest forward and topbow 11 lies furthest rearward. Top bow 11 forms a boundary of an upperedge of a rear window 17 integrated into the rear region of cover 12.

The frame assembly further includes a first linkage assembly 16 and asecond linkage assembly on respective longitudinal sides of vehicle body2. First linkage assembly 16 includes a first support arm system 15 andthe second linkage assembly includes a second support arm system 14.Support arm systems 14 and 15 extend along respective longitudinal sidesof vehicle body 2 in vehicle longitudinal direction A-A. Top bows 8, 9,10, and 11 interact with support arm systems 14 and 15. In particular,one end of each top bow 8, 9, 10, and 11 is connected to first supportarm system 15 and opposite end of each top bow 8, 9, 10, and 11 isconnected to second arm system 14.

First linkage assembly 16 and the second linkage assembly have the samestructure. As such, in the interest of brevity, only first linkageassembly 16 will be described in greater detail. First linkage assembly16 includes a first articulated device 18 (i.e., a hinged joint, anarticulated connection) and a second articulated device 19.

With reference to FIG. 2, first articulated device 18 includes a firstsupport arm 20, a second support arm 21, and riveting assembly 24.Support arms 20 and 21 are part of first support arm system 15. Supportarms 20 and 21 are held together at one end by riveting assembly 24 suchthat support arms 20 and 21 are movable relative to one another aboutthe one end.

With reference to FIG. 4, second articulated device 19 similarlyincludes a first support arm 22, a second support arm 23, and rivetingassembly 48. Support arms 22 and 23 are part of second support armsystem 14. Support arms 22 and 23 are held together at one end byriveting assembly 48 such that support arms 22 and 23 are movablerelative to one another about the one end.

Referring now to FIG. 3, with continual reference to FIG. 2, firstarticulated device 18 will be described in greater detail. As notedabove, first and second support arms 20 and 21 of first articulateddevice 18 are held together at one end by riveting assembly 24 such thatsupport arms 20 and 21 are movable relative to one another about the oneend. The one end of first support arm 20 includes a first bearing hole28 and the one end of second support arm 21 includes a second bearinghole 29. Riveting assembly 24 includes a rivet 25. Rivet 25 has a firstrivet head 27 and a second rivet head 26 with a rivet shaft 30 extendingtherebetween. Rivet shaft 30 extends through bearing holes 28 and 29 ofsupport arms 20 and 21 with first rivet head 27 being on the side offirst support arm 20 and second rivet head 26 being on the side ofsecond support arm 21.

Riveting assembly 24 further includes a bearing sleeve 31. Bearingsleeve 31 is between rivet shaft 30 and first and second bearing holes28 and 29. Bearing sleeve 31 includes a first collar-type stop 32, asecond circular ring shaped stop 34, and a third shoulder-type shaftstop 37. Bearing sleeve 31 fits with first collar-type stop 32 to afront face 33 of first support arm 20. Shoulder-type shaft stop 37 ofbearing sleeve 31 is in contact directly with an inner side 36 of firstrivet head 27. Second circular ring shaped stop 34, which is offsetopposite from first stop 32, is supported on an inner side 35 of secondrivet head 26. Bearing sleeve 31 further includes first and secondbearing sleeve sections 38 and 39 which respectively correspond to firstand second bearing holes 28 and 29 of support arms 20 and 21.

Bearing holes 28 and 29 of support arms 20 and 21 have respectivedifferent diameters DI and DII. In this embodiment, DI is larger thanDII. Like bearing holes 28 and 29, bearing sleeve sections 38 and 39 ofbearing sleeve 31 for a rivet sleeve Nts have respective differentdiameters Dlhl and Dlhll. In this embodiment, Dlhl is larger than Dlhll.

Riveting assembly 24 further includes first and second bearing bushings40 and 41. First and second bearing bushings 40 and 41 respectivelycorrespond to first and second bearing holes 28 and 29 of support arms20 and 21. First bearing bushing 40 is between first bearing sleevesection 38 and first support arm 20 within first bearing hole 28. Firstbearing bushing 40 has a first radial collar 45 and a second radialcollar 46. First radial collar 45 of first bearing bushing 40 extendsbetween first and second support arms 20 and 21. Second radial collar 46of first bearing bushing 40 separates first collar-type stop 32 ofbearing sleeve 31 and front face 33 of first support arm 20. Secondbearing bushing 41 is between second bearing sleeve section 39 andsecond support arm 21 within second bearing hole 29. Second bearingbushing 41 has a radial collar 43 on a free end 42 adjacent inner side35 of second rivet head 26. Radial collar 43 extends between a frontface 44 of second support arm 21 and inner side 35 of second rivet head26.

Second radial collar 46 of first bearing bushing 40 is formed so that itinitially has a cylindrical form Fz. Second radial collar 46 is broughtinto a radial form Fr by axial motion of first collar-type stop 32 ofbearing sleeve 31. For this purpose, first bearing bushing 40 incylindrical form Fz can be provided with local recesses An near its freeend as shown in FIG. 7. Local recesses An simplify the deformation ofform Fz into form Fr.

Referring now to FIGS. 5 and 6, with continual reference to FIG. 4,second articulated device 19 will be described in greater detail. Asnoted above, first and second support arms 22 and 23 of secondarticulated device 19 are held together at one end by riveting assembly48 such that support arms 22 and 23 are movable relative to one anotherabout the one end. The one end of first support arm 22 includes a firstbearing hole 63 and the one end of second support arm 23 includes asecond bearing hole 64.

Riveting assembly 48 has a blind rivet 49. Rivet 49 includes a rivetshaft formed as a rivet sleeve 50 and a mandrel shaft 51 with a mandrelhead 52. Rivet sleeve 50 and mandrel shaft 51 extend through bearingholes 63 and 64 of support arms 22 and 23. Mandrel head 52 is on theside of first support arm 22. Rivet sleeve 50 has a rivet sleeve head 58on a free side 57 corresponding to the side of second support arm 23.Rivet sleeve head 58 is on the side of second support arm 23.

Riveting assembly 48 further includes a bearing sleeve 56. Bearingsleeve 56 has a shaft stop 55. Bearing sleeve 56 is assembled similar tobearing sleeve 31.

Riveting assembly 48 further includes first and second bearing bushingswhich respectively correspond to first and second bearing holes 63 and64 of support arms 22 and 23. The first and second bearing bushings ofriveting assembly 48 are respectively assembled similar to first andsecond bearing bushings 40 and 41 of riveting assembly 24. The firstbearing bushing corresponding to first bearing hole 63 proceeds betweenfirst bearing hole 63 and a first bearing sleeve section of bearingsleeve 56. Likewise, the second bearing bushing corresponding to secondbearing hole 64 proceeds between second bearing hole 64 and a secondbearing sleeve section of bearing sleeve 56. The bearing bushings ofriveting assembly 48 as well as bearing bushings 40 and 41 are made ofplastic, metal, or a suitable material having appropriate bearingcharacteristics.

As shown in FIG. 5, in a pre-finished state, mandrel head 52 liesagainst a free sleeve end 53 of rivet sleeve 50 on the side of firstsupport arm 22. As shown in FIG. 6, in a finished state, a radialexpansion 54 of rivet sleeve 50 lies against shaft stop 55 of bearingsleeve 56. Radial expansion 54 is produced in response to an axialmotion of mandrel shaft 51 and mandrel head 52 in the B direction (i.e.,from the side of first support arm 22 to the side of second support arm23). Rivet sleeve 50 by interposition of a spacer disk 59 lies against acollar 60 of a bearing bushing corresponding to second bearing hole 63.

While embodiments of the present invention have been illustrated anddescribed, it is not intended that these embodiments illustrate anddescribe all possible forms of the present invention. Rather, the wordsused in the specification are words of description rather thanlimitation, and it is understood that various changes may be madewithout departing from the spirit and scope of the present invention.

What is claimed is:
 1. An articulated device comprising: a first armhaving a first end with a first bearing hole; a second arm having afirst end with a second bearing hole, wherein the first ends of the armsare adjacent to one another with the bearing holes axially aligned; anda rivet assembly for connecting the arms together at the first ends suchthat the arms are movable relative to one another about the first ends,the rivet assembly having a rivet, the rivet having first and secondrivet heads and a rivet shaft axially extending between the rivet heads,the rivet shaft axially extending through the first and second bearingholes with the first rivet head being adjacent to the first end of thefirst arm adjacent to the first bearing hole and the second rivet headbeing on the first end of the second arm adjacent to the second bearinghole, wherein the first rivet head partially covers the first bearinghole and the second rivet head entirely covers the second bearing hole;the rivet assembly further having a bearing sleeve axially extendingalong the rivet shaft and radially extending between the rivet shaft andthe first and second bearing holes, the bearing sleeve having a firststop and a shaft stop adjacent the first rivet head with the first stoplying against the first arm and the shaft stop lying at least partiallyaxially within the first bearing hole against the first rivet head,wherein the first stop and the first rivet head are radially alignedwith one another at an axial position located outside of the firstbearing hole, the bearing sleeve further having a ring-shaped stopadjacent the second rivet head with the ring-shaped stop lying axiallywithin the second bearing hole against the second rivet head.
 2. Thearticulated device of claim 1 wherein: the first rivet head includes aradial expansion, wherein the shaft stop lies against the radialexpansion of the first rivet head.
 3. The articulated device of claim 1wherein: the bearing sleeve further includes first and second bearingsleeve sections which respectively correspond to the first and secondbearing holes of the arms; wherein the rivet assembly further includesfirst and second bearing bushings which respectively correspond to thefirst and second bearing holes of the arms; wherein the first bearingbushing is between the first bearing sleeve section and the first armwithin the first bearing hole and the second bearing bushing is betweenthe second bearing sleeve section and the second arm within the secondbearing hole.
 4. The articulated device of claim 3 wherein: the secondbearing bushing has a radial collar, the radial collar extending betweenthe second arm and the second rivet head.
 5. The articulated device ofclaim 3 wherein: the first bearing bushing has first and second radialcollars, the first radial collar extending between the first and secondarms, the second radial collar is between the first stop of the bearingsleeve and the first arm.
 6. The articulated device of claim 5 wherein:the second radial collar is deformed from a cylindrical form into aradial form in response to an axial motion of the bearing sleeve in thedirection from the first rivet head to the second rivet head.
 7. Thearticulated device of claim 6 wherein: the second radial collar includesrecesses to assist in the deformation of the second radial collar fromthe cylindrical form to the radial form.
 8. The articulated device ofclaim 3 wherein: the bearing bushings include at least one of plasticand metal.
 9. The articulated device of claim 1 wherein: the firstbearing hole has a larger diameter than the second bearing hole.